CN206279225U - The system for processing iron content greasy filth - Google Patents
The system for processing iron content greasy filth Download PDFInfo
- Publication number
- CN206279225U CN206279225U CN201621298435.XU CN201621298435U CN206279225U CN 206279225 U CN206279225 U CN 206279225U CN 201621298435 U CN201621298435 U CN 201621298435U CN 206279225 U CN206279225 U CN 206279225U
- Authority
- CN
- China
- Prior art keywords
- outlet
- entrance
- greasy filth
- iron content
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model discloses a kind of system for processing iron content greasy filth, the system includes：There is mixing arrangement, mixing arrangement iron content greasy filth entrance, Iron Ore Powder entrance, binding agent entrance, coal powder entrance and mixed material to export；There is press ball device, press ball device mixed material entrance and mixing pelletizing to export；Pretreatment unit, pretreatment unit mixes pelletizing outlet after having mixing pelletizing entrance, oil water mixture outlet and pretreatment；Rotary hearth furnace, rotary hearth furnace mixes pelletizing entrance, reduction exhanst gas outlet and reduction solid product outlet after having pretreatment, there is burner in rotary hearth furnace；Molten point of stove of combustion gas, the molten point stove of combustion gas has solid reduction product entrance, molten point of exhanst gas outlet, molten iron outlet and solid discharge.The oil product and ferro element of the high added value in iron content greasy filth can be effectively reclaimed using the system, and coking phenomenon will not occur in smelting process, so as to realize the recycling of iron content greasy filth while equipment stable operation is ensured.
Description
Technical field
The utility model belongs to field of metallurgy, and specifically, the utility model is related to the system for processing iron content greasy filth.
Background technology
One cold-rolled steel factory of 1,000,000 tons of yield, iron content greasy filth produces 3000~4000 tons, wherein iron content greasy filth in 1 year
Main component iron and iron oxide accounting 70~80%, remaining be emulsion and moisture.The recyclable iron for the treatment of of correlation is done to it
With the oil in emulsion.At present, iron content greasy filth should so spend greasy filth to dispose expense, again meeting usually as Solid Waste Treatment
Waste iron resource and cause secondary environmental pollution.
Treatment iron content greasy filth method has burning method, and feature is to be burned iron content greasy filth, using the high temperature for burning generation
Flue gas drying simultaneously aoxidizes the prepared di-iron trioxide of ferroso-ferric oxide.The method does not recycle the oil in iron content greasy filth, and
The secondary pollutions such as flue dust and sewage are easily produced in burning process.Also have using by adding removal of surfactant iron content oil
The method of oil content in mud.The method needs to add chemical reagent, causes processing cost to increase, and oil content removing is not thorough, together
When produce new sewage.
After iron content greasy filth is mixed with iron ore by a certain percentage, flow process is smelted iron using traditional " blast furnace-converter ",
Although the advantages of flow technology maturation and huge production ability, deficiency is still present：One is to the strong of high grade coke
Rely on and require；Two is that iron content greasy filth easily occurs coking into blast furnace is interior, easily blocks blast furnace, and it is difficult to cause burner hearth to control.
Therefore, the technology of existing treatment iron content greasy filth is further improved.
Utility model content
The utility model is intended at least solve to a certain extent one of technical problem in correlation technique.Therefore, this reality
It is to propose a kind of system for processing iron content greasy filth with a new purpose, iron content greasy filth can be effectively reclaimed using the system
In high added value oil product and ferro element, and coking phenomenon will not occur in smelting process, so as to ensure that equipment is steady
Surely the recycling of iron content greasy filth is realized while operation.
In one side of the present utility model, the utility model proposes a kind of system for processing iron content greasy filth.According to this
The embodiment of utility model, the system includes：
Mixing arrangement, the mixing arrangement has iron content greasy filth entrance, Iron Ore Powder entrance, binding agent entrance, coal powder entrance
Exported with mixed material；
There is press ball device, the press ball device mixed material entrance and mixing pelletizing to export, the mixed material entrance
It is connected with mixed material outlet；
Pretreatment unit, the pretreatment unit is mixed after having mixing pelletizing entrance, gas mixture outlet and pretreatment
Pelletizing outlet is closed, the mixing pelletizing entrance is connected with the mixing pelletizing outlet；
Rotary hearth furnace, the rotary hearth furnace mixes pelletizing entrance, reduction exhanst gas outlet and reduction solid product after having pretreatment
Outlet, and burner is disposed with the rotary hearth furnace, pelletizing entrance is mixed after the pretreatment and mixes ball with after the pretreatment
Group's outlet is connected；
Molten point of stove of combustion gas, the molten point stove of the combustion gas have reduction solid product entrance, molten point of exhanst gas outlet, molten iron outlet and
Solid discharge, the reduction solid product entrance is connected with the reduction solid product outlet.
Thus, the system of the treatment iron content greasy filth according to the utility model embodiment is by by iron content greasy filth and coal dust, iron
Miberal powder and binding agent supply to mixing arrangement mixed successively, and because iron content greasy filth has viscosity, therefore iron content greasy filth can be with
Portion of binder is substituted, so as to reduce cost of material, and the viscosity of iron content greasy filth can be directly reduced by mixed process, from
And it is possible to prevente effectively from iron content greasy filth sticks to equipment surface in subsequent processes, so that ensure equipment stable operation, so
Pressure ball treatment is carried out by by the compound after above-mentioned being well mixed afterwards, iron content greasy filth is capable of achieving and is fully contacted with Iron Ore Powder, and
And pre-processed by back segment, organic component is in gaseous form that gas mixture is evaporated in iron content greasy filth, increased residual
Charcoal and Iron Ore Powder contact area, so as to make it into when rotary hearth furnace carries out reduction process with reduction efficiency higher, together
When the gas mixture that will evaporate the oil product that can obtain high added value is processed through follow-up Oil-gas Separation, such that it is able to effective
The coking problem during rotary hearth furnace reduction is avoided, then will mix pelletizing after pretreatment supplies to rotary hearth furnace and combustion gas and melt successively
Divide and processed in stove, can effectively reclaim the ferro element in iron content greasy filth.Thus, can ensure that equipment is steady using the system
Surely the recycling of iron content greasy filth is realized while operation.
In addition, the system of the treatment iron content greasy filth according to the utility model above-described embodiment can also have what is added as follows
Technical characteristic：
Optional, dryer section and retort section are divided into along material movement direction in the pretreatment unit, it is described mixed
Close pelletizing entrance and be arranged on the dryer section, pelletizing outlet is mixed after the pretreatment and gas mixture outlet is arranged on
The retort section.Thus, it is possible to the oil product of the high added value in iron content greasy filth is efficiently separated out, so as to improve the money of iron content greasy filth
Sourceization is utilized.
Optional, the system of the treatment iron content greasy filth is further included：Oil gas purification separation device, the oil gas purification
Separator has gas mixture entrance, combustible gas outlet and oil water mixture outlet, the gas mixture entrance and institute
State gas mixture outlet to be connected, the combustible gas outlet is connected with the burner in the rotary hearth furnace；Oily-water seperating equipment, it is described
Oily-water seperating equipment has oil water mixture entrance, lightweight oil export, water out and heavy oil export, and the oil water mixture enters
Mouth is connected with oil water mixture outlet.Thus, it is possible to significantly improve the economy of iron content greasy filth.
Optional, the system of the treatment iron content greasy filth is further included：Heat accumulating type air preheater, the heat accumulating type air preheater
With air outlet slit, the high-temperature flue gas entry and institute after exhanst gas outlet after air intake, high-temperature flue gas entry, heat exchange and heat exchange
State reduction exhanst gas outlet to be connected with described at least one of point exhanst gas outlet that melts, air outlet slit and the burner after the heat exchange
It is molten with the combustion gas to divide at least one of stove to be connected；Smoke eliminator, the smoke eliminator have smoke inlet and
Purifying smoke is exported, and the smoke inlet is connected with exhanst gas outlet after the heat exchange.Thus, it is possible to significantly reduce system energy consumption.
Optional, the reduction exhanst gas outlet and described melting divide at least one of exhanst gas outlet and the pretreatment unit
It is connected.Thus, it is possible to significantly reduce preprocessing process energy consumption.
Additional aspect of the present utility model and advantage will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined
Become substantially and be readily appreciated that, wherein：
Fig. 1 is the system structure diagram of the treatment iron content greasy filth according to the utility model one embodiment；
Fig. 2 is the system structure diagram of the treatment iron content greasy filth according to the utility model further embodiment；
Fig. 3 is the system structure diagram of the treatment iron content greasy filth according to the utility model another embodiment；
Fig. 4 is the system structure diagram of the treatment iron content greasy filth according to the utility model another embodiment；
Fig. 5 is the method stream of the system treatment iron content greasy filth of the treatment iron content greasy filth according to the utility model one embodiment
Journey schematic diagram；
Fig. 6 is the method for the system treatment iron content greasy filth of the treatment iron content greasy filth according to the utility model further embodiment
Schematic flow sheet；
Fig. 7 is the system method that processes iron content greasy filth of the treatment iron content greasy filth according to the utility model another embodiment
Schematic flow sheet；
Fig. 8 is the system method that processes iron content greasy filth of the treatment iron content greasy filth according to the utility model another embodiment
Schematic flow sheet；
Fig. 9 is the system structure diagram of the treatment iron content greasy filth according to the utility model another embodiment.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be
Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or two interaction relationships of element, unless otherwise clearly restriction.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be as the case may be understood.
In one side of the present utility model, the utility model proposes a kind of system for processing iron content greasy filth.According to this
The embodiment of utility model, with reference to Fig. 1, the system includes：Mixing arrangement 100, press ball device 200, pretreatment unit 300, turn
Molten point of stove 500 of bottom stove 400 and combustion gas.
According to embodiment of the present utility model, mixing arrangement 100 has oil-containing greasy filth entrance 101, coal powder entrance 102, iron
Miberal powder entrance 103, binding agent entrance 104 and mixed material outlet 105, and be suitable to iron content greasy filth, Iron Ore Powder, binding agent and coal
Powder carries out mixed processing, to obtain mixed material.Inventor has found, by by iron content greasy filth and coal dust, Iron Ore Powder and bonding
Agent is mixed, and iron content greasy filth therein can substitute portion of binder, such that it is able to reduce cost of material, and by addition
Iron Ore Powder, can directly reduce the viscosity of iron content greasy filth, so that it is possible to prevente effectively from raw material is adhered in continuing processing procedure behind
In equipment surface.It should be noted that those skilled in the art can be according to actual needs to binding agent particular type carry out
Selection, for example, can use bentonite.
According to one embodiment of the present utility model, the mixed proportion of iron content greasy filth and coal dust, Iron Ore Powder and binding agent is simultaneously
It is not particularly limited, those skilled in the art can be selected according to actual needs, it is specific according to one of the present utility model
Embodiment, iron content greasy filth and coal dust, Iron Ore Powder and binding agent are mixed according to following ratio, and the addition of binding agent is Iron Ore Powder
3~12wt%, the addition of iron content greasy filth is 10~30wt% of Iron Ore Powder, and the addition of coal dust is with controlling compound
Cmol/OmolIt is 1.1~1.3.
According to embodiment of the present utility model, press ball device 200 has mixed material entrance 201 and mixing pelletizing outlet
202, mixed material entrance 201 is connected with mixed material outlet 105, and is suitable to for mixed material to carry out pelletizing, to be mixed
Close pelletizing.Thus, pressure ball treatment is carried out by by the compound after above-mentioned being well mixed, is capable of achieving iron content greasy filth and is filled with Iron Ore Powder
Tap is touched, so as to improve iron reduction efficiency during sequential reduction.
According to one embodiment of the present utility model, the particle diameter for mixing pelletizing is not particularly restricted, people in the art
Member can be selected according to actual needs, and according to a specific embodiment of the present utility model, the particle diameter for mixing pelletizing can be with
It is 5~50mm.Specifically, well mixed mixed material is carried out into mixing pressure ball treatment, it is the ellipse of φ 15-50mm to obtain particle diameter
Globular material；Or disk spin is used, obtain the spheroidal material that particle diameter is φ 5-20mm.Inventor has found, is entirely giving birth to
Produce in running, when mixing pelletizing particle diameter is too small, power consumption substantially increases during pressure ball, balling-up significant difficulties, and when mixing
After pelletizing particle diameter is excessive, during back segment pretreatment and rotary hearth furnace reduction, heat transfer effect is significantly reduced, and the thermal efficiency substantially becomes
Difference.Can realize that iron content greasy filth is fully contacted with Iron Ore Powder by pressure ball simultaneously, by after the heat treatment in back segment preprocessing process,
Organic component in iron content greasy filth is evaporated in gaseous form, increased the charcoal and Iron Ore Powder contact area of residual, is entered at it
When entering rotary hearth furnace and carrying out reduction process, improve the reduction efficiency of iron, and be effectively prevented from iron content greasy filth to go out in rotary hearth furnace
Existing coking problem.On the other hand, pressure ball is mixed with Iron Ore Powder by by iron content greasy filth, it is possible to prevente effectively from iron content greasy filth is because directly
Adhesion is difficult to remove in the reactor during treatment.
According to embodiment of the present utility model, there is pretreatment unit 300 mixing pelletizing entrance 301, oil water mixture to go out
Mouthfuls 302 and pretreatment after mix pelletizing outlet 303, mixing pelletizing entrance 301 exports 202 and is connected with mixing pelletizing, and be suitable to by
Mixing pelletizing is pre-processed, to mix pelletizing after obtaining oil water mixture and pretreatment.Thus, it is possible to efficiently separate out contain
High added value oil product in iron greasy filth, and the coking problem of follow-up rotary hearth furnace can be avoided.
According to further embodiment of the present utility model, drying is divided into along material movement direction in pretreatment unit
Section and retort section, mixing pelletizing entrance are arranged on dryer section, pelletizing outlet is mixed after pretreatment and gas mixture is exported and set
In retort section.Thus, by using the pretreatment unit with dryer section and retort section, can effectively remove the moisture in pelletizing
And volatile matter, and organic component is fully deviate from from iron content greasy filth in causing iron content greasy filth through retort section, through follow-up profit point
The recovery of high added value oil product in iron content greasy filth can be realized from treatment, so as in effectively prevent sequential reduction processing procedure
Coking problem, and then system stable operation can be ensured.
According to another embodiment of the present utility model, the temperature of dried process can be 140~300 degrees Celsius, destructive distillation
The temperature for the treatment of can be 200~500 degrees Celsius, and the temporal summation of dried process and destructive distillation treatment can be 20~120 minutes.
Thus, it is possible to ensure iron content greasy filth in oil product higher recovery while improve sequential reduction during iron reduction efficiency.
According to another embodiment of the present utility model, the moisture content mixed after pretreatment in pelletizing is not limited especially
System, those skilled in the art can be selected according to actual needs, according to a specific embodiment of the present utility model, pre- place
The moisture content mixed after reason in pelletizing can be not higher than 0.4wt%, and volatile matter can be not higher than 8wt%.Thus, it is possible to after improving
The reduction efficiency of iron in continuous reduction process.
According to embodiment of the present utility model, rotary hearth furnace 400 mixes pelletizing entrance 401, reduction flue gas after having pretreatment
Outlet 402 and reduction solid product outlet 403, and burner (not shown) is disposed with rotary hearth furnace 400, ball is mixed after pretreatment
Group's entrance 401 is connected with pelletizing outlet 303 is mixed after pretreatment, and is suitable to that reduction treatment will be carried out by mixing pelletizing after pretreatment,
To obtain reduction flue gas and reduction solid product.Thus, by by the pre- place of iron content greasy filth and coal dust, Iron Ore Powder and binding agent
Mixing pelletizing is supplied into rotary hearth furnace and carries out reduction treatment after reason, in fully reclaiming iron content greasy filth in above-mentioned steps
Oil product, therefore coking phenomenon will not be produced in the reduction process, thereby may be ensured that the stable operation of rotary hearth furnace.
According to one embodiment of the present utility model, the temperature of reduction treatment is not particularly restricted, people in the art
Member can be selected according to actual needs, according to a specific embodiment of the present utility model, the temperature of burner in rotary hearth furnace
At 1000~1400 degrees Celsius, the reduction treatment time is 30~120 minutes for control.Thus, it is possible to further improve the reduction of iron
Efficiency.
According to further embodiment of the present utility model, the temperature for reducing solid product can be 900~1100 degrees Celsius.
Thus, molten office reason is carried out in the reduction solid product heat being delivered into molten point of stove of follow-up combustion gas, follow-up molten point can be significantly reduced
Process energy consumption.
Specifically, being dried obtained above during pelletizing heat delivers to rotary hearth furnace, rotary hearth furnace surrounding is disposed with many burners and is
Whole burner hearth provides heat, burn outer flame directly with dry pelletizing and contact, burner temperature control at 1000-1400 degrees Celsius,
Recovery time 30-120min, it is 900-1100 degrees Celsius to complete the pelletizing temperature after reduction.It is every burner of rotary hearth furnace heat supply
Using autonomous control system, each reaction zone temperature of precise control rotary hearth furnace is in required temperature range.Due to entering to turn to material
Before the stove reduction of bottom, iron content greasy filth and Iron Ore Powder are premixed into pressure ball in advance, through drying with after destructive distillation, raw material reclaimed water is got with de-
Remove, dredge the aperture of ball interior, increase the residual charcoal after dry and destructive distillation with the contact area between miberal powder, while improving spheroid
Mechanical strength, therefore enter after rotary hearth furnace the reactivity for strengthening between the two, improve the rate of recovery of metallic ore.Secondly, entirely
Process solid product uses hot charging, further reduces the energy consumption in ironmaking processes.3rd, according to testing result in mixed process
It is middle to appropriate raw coal powder is added in raw material, between 1.2-1.5, excessive charcoal is in rotary hearth furnace reduction to make charcoal and iron ratio after destructive distillation
During appropriate heat can be provided, it is possible to decrease rotary hearth furnace gas consumption, increase economic efficiency.
According to embodiment of the present utility model, molten point of stove 500 of combustion gas has solid reduction product entrance 501, molten point of flue gas
Outlet 502, molten iron exports 503 and solid discharge 504, and solid reduction product entrance 501 exports 403 phases with reduction solid product
Connect, and be suitable to for reduction solid product to carry out molten office reason, flue gas, molten iron and a residue are divided to obtain melting.Thus, it is possible to effectively
Realize the recycling of ferro element in iron content greasy filth.
According to one embodiment of the present utility model, the molten point in-furnace temperature of combustion gas is not particularly restricted, art technology
Personnel can be selected according to actual needs, according to a specific embodiment of the present utility model, can be fired using regenerator
It is 1300~1600 degrees Celsius that burner controls molten point of in-furnace temperature of combustion gas.Thus, it is possible to significantly improve molten iron be separated with slag
Efficiency.
Specifically, above-mentioned rotary hearth furnace reduction is obtained during solid product heat delivers to molten point of stove of combustion gas, one can be entered using hot charging
Step reduces the energy consumption of whole ironmaking processes.It is burner hearth heat supply to use heat-storage type burner mode of heating, and control in-furnace temperature exists
Between 1300-1600 degrees Celsius.Combustion gas melt point stove both sides be provided with to spray burner, using reversing combustion realize heat accumulating type fire
Burn, each burner can independent control.
The system of the treatment iron content greasy filth according to the utility model embodiment by by iron content greasy filth and coal dust, Iron Ore Powder and
Binding agent supplies to mixing arrangement mixed successively, and because iron content greasy filth has viscosity, therefore iron content greasy filth can substitute portion
Divide binding agent, so as to reduce cost of material, and the viscosity of iron content greasy filth can be directly reduced by mixed process, so as to rear
It is possible to prevente effectively from iron content greasy filth sticks to equipment surface in continuous processing procedure, so as to ensure equipment stable operation, then pass through
Compound after above-mentioned being well mixed is carried out into pressure ball treatment, iron content greasy filth is capable of achieving and is fully contacted with Iron Ore Powder, and pass through
Back segment pre-process, in iron content greasy filth organic component in gaseous form be gas mixture evaporate, increased residual charcoal and
The contact area of Iron Ore Powder, so as to make it into when rotary hearth furnace carries out reduction process with reduction efficiency higher, while will wave
The gas mixture for issuing processes the oil product that can obtain high added value through follow-up Oil-gas Separation, turns such that it is able to be prevented effectively from
Coking problem in the stove reduction process of bottom, then will mix pelletizing and supplies successively into molten point of stove of rotary hearth furnace and combustion gas after pretreatment
Processed, can effectively be reclaimed the ferro element in iron content greasy filth.Thus, equipment stable operation can ensured using the system
While realize the recycling of iron content greasy filth.
With reference to Fig. 2, the system of the treatment iron content greasy filth according to the utility model embodiment is further included：Oil gas purification point
From device 600 and oily-water seperating equipment 700.
According to embodiment of the present utility model, oil gas purification separation device 600 has gas mixture entrance 601, flammable
Gas outlet 602 and oil water mixture outlet 603, gas mixture entrance 601 are connected with gas mixture outlet 302, combustible gas
Outlet 602 is connected with the burner in rotary hearth furnace 400, and is suitable to for gas mixture to carry out separating treatment, to obtain combustible gas
And oil water mixture, and combustible gas is back to the burner of rotary hearth furnace is used as fuel.Thus, by by iron content greasy filth points
The combustible gas for separating out is supplied to the burner of rotary hearth furnace and used as fuel, can significantly reduce rotary hearth furnace fuel cost, and in fact
The recycling of existing iron content greasy filth.
According to embodiment of the present utility model, there is oily-water seperating equipment 700 oil water mixture entrance 701, light oil to go out
Mouth 702, water out 703 and heavy oil export 704, oil water mixture entrance 701 are connected with oil water mixture outlet 603, and suitable
Separating treatment is carried out in oil water mixture is supplied into oily-water seperating equipment, to obtain light oil, water and mink cell focus.By
This, carries out separating treatment, it is possible to achieve the recovery of light oil and mink cell focus, so as to significantly improve iron content by by oil water mixture
The economy of greasy filth.
With reference to Fig. 3, the system of the treatment iron content greasy filth according to the utility model embodiment is further included：Heat accumulating type is empty pre-
Device 800 and smoke eliminator 900.
According to embodiment of the present utility model, heat accumulating type air preheater 800 has air intake 801, high-temperature flue gas entry
802nd, exchange heat after exhanst gas outlet 803 and heat exchange after air outlet slit 804, high-temperature flue gas entry 802 with reduction exhanst gas outlet 402 and melt
At least one of exhanst gas outlet 502 is divided to be connected, molten point of stove 500 of air outlet slit 804 and the burner of rotary hearth furnace 400 and combustion gas after heat exchange
At least one of be connected, and be suitable to melt the reduction flue gas obtained in rotary hearth furnace and combustion gas melting of obtaining in point stove and divide in flue gas
At least one of and air exchanged heat, and be back to for air after heat exchange by flue gas so as to air after exchange heat and after exchanging heat
At least one of molten point of stove of burner and combustion gas in rotary hearth furnace is used as combustion-supporting gas.Thus, in by reclaiming rotary hearth furnace
The molten point of waste heat of flue gas in point stove is melted in reduction flue gas or/and combustion gas, and the waste heat of recovery is used to carry out at preheating air
Reason, and air after heat exchange is supplied to the molten point stove of the burner of rotary hearth furnace and/or combustion gas and used as combustion-supporting gas, such that it is able to effective
Ground improves the heat utilization efficiency of whole process, and reduces molten point of stove energy consumption of rotary hearth furnace and/or combustion gas.Specifically, air after heat exchange
Temperature be not higher than 650 degrees Celsius.
According to embodiment of the present utility model, there is smoke eliminator 900 smoke inlet 901 and purifying smoke to export
902, smoke inlet 901 is connected with exhanst gas outlet 803 after heat exchange, and is suitable to carry out flue gas after heat exchange obtained above at purification
Reason, to be purified flue gas.Specifically, flue gas removes row up to standard after nitrogen sulfide after smoke eliminator after exchanging heat
Put.It should be noted that those skilled in the art can be according to actual needs to smoke eliminator particular type select
Select.
With reference to Fig. 4, according to embodiment of the present utility model, in reduction exhanst gas outlet 402 and molten point of exhanst gas outlet 502 extremely
It is one of few to be connected with pretreatment unit 300, and be suitable to for the reduction flue gas obtained in rotary hearth furnace and combustion gas to melt what is obtained in point stove
It is molten to divide at least one of flue gas return pretreatment unit to be used as pretreatment medium.Thus, it is possible to significantly reduce pretreatment
The input of process energy consumption.
As described above, the system of the treatment iron content greasy filth according to the utility model embodiment can have the advantages that selected from following
At least one：
The system of the treatment iron content greasy filth according to the utility model embodiment can thoroughly realize that iron content greasy filth resource is returned
Receive the oil product of wherein high additive value, while reclaim the metallic element in iron content greasy filth, in addition the system using iron content greasy filth with
Miberal powder directly mixes pressure ball ironmaking, can be prevented effectively from iron content greasy filth rotary hearth furnace smelting process and coking problem occurs.
The system of the treatment iron content greasy filth according to the utility model embodiment directly mixes pressure with miberal powder using iron content greasy filth
Ball, makes full use of iron content greasy filth to replace portion of binder, realizes balling-up requirement.Meanwhile, the viscosity of iron content greasy filth is directly reduced,
It is not in the problem on adhesive reaction device surface during treatment iron content greasy filth.In addition, the oil of iron content greasy filth can be directly as
The heat that miberal powder reduction needs, the iron in iron content greasy filth can also be reduced into molten iron and be reclaimed.
The system of the treatment iron content greasy filth according to the utility model embodiment uses destructive distillation revolving bed in pretreatment stage, makes
Iron content greasy filth is obtained with respect to drapery panel transfixion, iron content greasy filth adhesion card or blade can be prevented effectively from, improve pre-processing device
The thermal efficiency.
Produced by by molten point of stove of rotary hearth furnace and combustion gas in the system of the treatment iron content greasy filth according to the utility model embodiment
After raw high-temperature flue gas and air direct heat transfer, can abundant recovered flue gas heat preheated air, effectively improve whole process
Heat utilization efficiency.
Understand for convenience, below with reference to Fig. 5-8 pairs of system using the treatment iron content greasy filth of the utility model embodiment
The method for processing iron content greasy filth is described in detail.According to embodiment of the present utility model, with reference to Fig. 5, the method includes：
S100：Iron content greasy filth, Iron Ore Powder, binding agent are supplied with coal dust and is mixed into mixing arrangement
In the step, iron content greasy filth, Iron Ore Powder, binding agent and coal dust are supplied into mixing arrangement carries out mixed processing,
To obtain mixed material.Inventor's discovery, is mixed by by iron content greasy filth with coal dust, Iron Ore Powder and binding agent, wherein
Iron content greasy filth can substitute portion of binder, such that it is able to reduce cost of material, and by adding Iron Ore Powder, can be direct
The viscosity of iron content solid residue is reduced, so that it is possible to prevente effectively from raw material sticks to equipment surface in continuing processing procedure behind.
It should be noted that those skilled in the art can be according to actual needs to binding agent particular type select, for example may be used
To use bentonite.
According to one embodiment of the present utility model, the mixed proportion of iron content greasy filth and coal dust, Iron Ore Powder and binding agent is simultaneously
It is not particularly limited, those skilled in the art can be selected according to actual needs, it is specific according to one of the present utility model
Embodiment, iron content greasy filth and coal dust, Iron Ore Powder and binding agent are mixed according to following ratio, and the addition of binding agent is Iron Ore Powder
3~12wt%, the addition of iron content greasy filth is 10~30wt% of Iron Ore Powder, and the addition of coal dust is with controlling compound
Cmol/OmolIt is 1.1~1.3.
S200：Mixed material is supplied into press ball device carries out pelletizing
In the step, mixed material obtained above is supplied into press ball device carries out pelletizing treatment, to be mixed
Close pelletizing.Thus, pressure ball treatment is carried out by by the compound after above-mentioned being well mixed, is capable of achieving iron content greasy filth and is filled with Iron Ore Powder
Tap is touched, so as to improve iron reduction efficiency during sequential reduction.
According to one embodiment of the present utility model, the particle diameter for mixing pelletizing is not particularly restricted, people in the art
Member can be selected according to actual needs, and according to a specific embodiment of the present utility model, the particle diameter for mixing pelletizing can be with
It is 5~50mm.Specifically, well mixed mixed material is carried out into mixing pressure ball treatment, it is the ellipse of φ 15-50mm to obtain particle diameter
Globular material；Or disk spin is used, obtain the spheroidal material that particle diameter is φ 5-20mm.Inventor has found, is entirely giving birth to
Produce in running, when mixing pelletizing particle diameter is too small, power consumption substantially increases during pressure ball, balling-up significant difficulties, and when mixing
After pelletizing particle diameter is excessive, during back segment pretreatment and rotary hearth furnace reduction, heat transfer effect is significantly reduced, and the thermal efficiency substantially becomes
Difference.Can realize that iron content greasy filth is fully contacted with Iron Ore Powder by pressure ball simultaneously, by after the heat treatment in back segment preprocessing process,
Organic component in iron content greasy filth is evaporated in gaseous form, increased the charcoal and Iron Ore Powder contact area of residual, is entered at it
When entering rotary hearth furnace and carrying out reduction process, improve the reduction efficiency of iron, and be effectively prevented from iron content greasy filth to go out in rotary hearth furnace
Existing coking problem.On the other hand, pressure ball is mixed with Iron Ore Powder by by iron content greasy filth, it is possible to prevente effectively from iron content greasy filth is because directly
Adhesion is difficult to remove in the reactor during treatment.
S300：Mixing pelletizing is supplied and is pre-processed into pretreatment unit
In the step, mixing pelletizing obtained above is supplied and is pre-processed into pretreatment unit, it is pre- to obtain
Mix pelletizing and gas mixture after treatment.Thus, it is possible to the high added value oil product in iron content greasy filth is efficiently separated out, and can
To avoid the coking problem of follow-up rotary hearth furnace.
According to one embodiment of the present utility model, pretreatment includes dried process and destructive distillation treatment, will mix pelletizing according to
It is secondary to be dried treatment and destructive distillation treatment, such that it is able to mix pelletizing and gas mixture after being pre-processed.Thus, by adopting
With the pretreatment unit with dryer section and retort section, the moisture and volatile matter in pelletizing can be effectively removed, and through destructive distillation
Organic component is fully deviate from from iron content greasy filth during section causes iron content greasy filth, and iron content oil can be realized through follow-up water-oil separating treatment
The recovery of high added value oil product in mud, so as to effectively prevent the coking problem in sequential reduction processing procedure, and then can protect
Card system stable operation.
According to another embodiment of the present utility model, the temperature of dried process can be 140~300 degrees Celsius, destructive distillation
The temperature for the treatment of can be 200~500 degrees Celsius, and the temporal summation of dried process and destructive distillation treatment can be 20~120 minutes.
Thus, it is possible to ensure iron content greasy filth in oil product higher recovery while improve sequential reduction during iron reduction efficiency.
According to another embodiment of the present utility model, the moisture content mixed after pretreatment in pelletizing is not limited especially
System, those skilled in the art can be selected according to actual needs, according to a specific embodiment of the present utility model, pre- place
The moisture content mixed after reason in pelletizing can be not higher than 0.4wt%, and volatile matter can be not higher than 8wt%.Thus, it is possible to after improving
The reduction efficiency of iron in continuous reduction process.
S400：Pelletizing will be mixed after pretreatment to supply into rotary hearth furnace and carry out reduction treatment
In the step, pelletizing will be mixed after pretreatment obtained above and supply into rotary hearth furnace and carry out reduction treatment, so as to
Obtain reduction flue gas and reduction solid product.Thus, after by the pretreatment of iron content greasy filth and coal dust, Iron Ore Powder and binding agent
Mixing pelletizing is supplied into rotary hearth furnace and carries out reduction treatment, due to direct with miberal powder using iron content greasy filth in above-mentioned steps S300
Mixing pressure ball ironmaking, therefore coking phenomenon will not be produced in the reduction process, thereby may be ensured that the stable operation of rotary hearth furnace.
According to one embodiment of the present utility model, the temperature of reduction treatment is not particularly restricted, people in the art
Member can be selected according to actual needs, according to a specific embodiment of the present utility model, the temperature of burner in rotary hearth furnace
At 1000~1400 degrees Celsius, the reduction treatment time is 30~120 minutes for control.Thus, it is possible to further improve the reduction of iron
Efficiency.
According to further embodiment of the present utility model, the temperature for reducing solid product can be 900~1100 degrees Celsius.
Thus, molten office reason is carried out in the reduction solid product heat being delivered into molten point of stove of follow-up combustion gas, follow-up molten point can be significantly reduced
Process energy consumption.Specifically, will mix after pretreatment obtained above during pelletizing heat delivers to rotary hearth furnace, rotary hearth furnace surrounding is disposed with many
Root burner provides heat for whole burner hearth, and the outer flame that burns directly is contacted with mixing pelletizing after pretreatment, and burner temperature control exists
1000-1400 degrees Celsius, recovery time 30-120min, it is 900-1100 degrees Celsius to complete the pelletizing temperature after reduction.To turn bottom
Every burner of stove heat supply uses autonomous control system, and each reaction zone temperature of precise control rotary hearth furnace is in required temperature range.
Due to before rotary hearth furnace reduction is entered to material, iron content greasy filth and Iron Ore Powder being premixed into pressure ball in advance, after pretreatment, in raw material
Moisture and volatile matter are removed, and dredge the aperture of ball interior, increase pretreated residual charcoal with the contact surface between miberal powder
Product, while improving the mechanical strength of spheroid, therefore enters after rotary hearth furnace the reactivity for strengthening between the two, improves returning for metallic ore
Yield.Secondly, whole process solid product uses hot charging, further reduces the energy consumption in ironmaking processes.3rd, according to detection
Result in mixed process to raw material in add appropriate raw coal powder, make after pretreatment charcoal and weight of iron ratio between 1.2-1.5,
Excessive charcoal can provide appropriate heat during rotary hearth furnace reduction, it is possible to decrease rotary hearth furnace gas consumption, increase economic efficiency.
S500：Reduction solid product is supplied carries out molten office reason into molten point of stove of combustion gas
In the step, above-mentioned resulting reduction solid product is supplied carries out molten office reason into molten point of stove of combustion gas, with
Just molten point of flue gas, molten iron and residue are obtained.Thus, it is possible to realize the recycling of ferro element in iron content greasy filth.
According to one embodiment of the present utility model, the molten point in-furnace temperature of combustion gas is not particularly restricted, art technology
Personnel can be selected according to actual needs, according to a specific embodiment of the present utility model, can be fired using regenerator
It is 1300~1600 degrees Celsius that burner controls molten point of in-furnace temperature of combustion gas.Thus, it is possible to significantly improve molten iron be separated with slag
Efficiency.
Specifically, above-mentioned rotary hearth furnace reduction is obtained during solid product heat delivers to molten point of stove of combustion gas, one can be entered using hot charging
Step reduces the energy consumption of whole ironmaking processes.It is burner hearth heat supply to use heat-storage type burner mode of heating, and control in-furnace temperature exists
Between 1300-1600 degrees Celsius.Combustion gas melt point stove both sides be provided with to spray burner, using reversing combustion realize heat accumulating type fire
Burn, each burner can independent control.
The method of the treatment iron content greasy filth according to the utility model embodiment by by iron content greasy filth and coal dust, Iron Ore Powder and
Binding agent supplies to mixing arrangement mixed successively, and because iron content greasy filth has viscosity, therefore iron content greasy filth can substitute portion
Divide binding agent, so as to reduce cost of material, and the viscosity of iron content greasy filth can be directly reduced by mixed process, so as to rear
It is possible to prevente effectively from iron content greasy filth sticks to equipment surface in continuous processing procedure, so as to ensure equipment stable operation, then pass through
Compound after above-mentioned being well mixed is carried out into pressure ball treatment, iron content greasy filth is capable of achieving and is fully contacted with Iron Ore Powder, and pass through
Back segment pre-process, in iron content greasy filth organic component in gaseous form be gas mixture evaporate, increased residual charcoal and
The contact area of Iron Ore Powder, so as to make it into when rotary hearth furnace carries out reduction process with reduction efficiency higher, while will wave
The gas mixture for issuing processes the oil product that can obtain high added value through follow-up Oil-gas Separation, turns such that it is able to be prevented effectively from
Coking problem in the stove reduction process of bottom, then will mix pelletizing and supplies successively into molten point of stove of rotary hearth furnace and combustion gas after pretreatment
Processed, can effectively be reclaimed the ferro element in iron content greasy filth.Thus, equipment stable operation can ensured using the system
While realize the recycling of iron content greasy filth.
With reference to Fig. 6, the method for the treatment iron content greasy filth according to the utility model embodiment is further included：
S600：Gas mixture is supplied carries out separating treatment into oil gas purification separation device
In the step, the gas mixture that S300 is obtained is supplied carries out separating treatment into oil gas purification separation device,
To obtain combustible gas and oil water mixture, and the burner of the rotary hearth furnace that combustible gas is back in S400 is used as fuel.
Thus, the burner by the way that the combustible gas isolated in iron content greasy filth is supplied to rotary hearth furnace is used as fuel, can significantly be dropped
Low rotary hearth furnace fuel cost, and realize the recycling of iron content greasy filth.
S700：Oil water mixture is supplied into oily-water seperating equipment carries out separating treatment
In the step, oil water mixture is supplied into oily-water seperating equipment carries out separating treatment, so as to obtain light oil,
Water and mink cell focus.Thus, separating treatment is carried out by by oil water mixture, it is possible to achieve the recovery of light oil and mink cell focus, from
And significantly improve the economy of iron content greasy filth.
With reference to Fig. 7, the method for the treatment iron content greasy filth according to the utility model embodiment is further included：
S800：At least one of reduction flue gas and molten point of flue gas and air are supplied into heat accumulating type air preheater and changed
Heat
In the step, at least one of flue gas and air is divided to supply into heat accumulating type air preheater with molten reduction flue gas
Row heat exchange, flue gas so as to air after exchange heat and after exchanging heat, and air after heat exchange is back to the burning in S400 in rotary hearth furnace
At least one of molten point of stove of combustion gas in mouth and S500 is used as combustion-supporting gas.Thus, by reclaiming the reduction in rotary hearth furnace
The molten point of waste heat of flue gas in point stove is melted in flue gas or/and combustion gas, and the waste heat of recovery is used to carry out air the pre-heat treatment, and
Air after heat exchange is supplied to the burner of rotary hearth furnace and/or the molten point stove of combustion gas and used as combustion-supporting gas, such that it is able to effectively carry
The heat utilization efficiency of whole process high, and reduce molten point of stove energy consumption of rotary hearth furnace and/or combustion gas.Specifically, heat exchange after air temperature
Not higher than 650 degrees Celsius of degree.
S900：Flue gas after heat exchange is supplied into smoke eliminator carries out purified treatment
In the step, flue gas after heat exchange is supplied carries out purified treatment into the smoke eliminator, net to obtain
Change flue gas.Specifically, flue gas removes qualified discharge after nitrogen sulfide after smoke eliminator after exchanging heat.
With reference to Fig. 8, the method for the treatment iron content greasy filth according to the utility model embodiment is further included：
S1000：Flue gas will be reduced and pretreatment unit during at least one of point flue gas is back to S300 will be melted and located as pre-
Reason medium is used
In the step, at least one of reduction flue gas and molten point of flue gas are back in S300 pretreatment unit as pre-
Treatment medium is used.Thus, it is possible to significantly reduce the input of preprocessing process energy consumption.
Below with reference to specific embodiment, the utility model is described, it is necessary to explanation is, these embodiments are only
Descriptive, and the utility model is limited never in any form.
Embodiment
The iron content greasy filth provided by Anshan iron and steel plant, measure it to fix carbon content by Industrial Analysis is 10 ± 1wt%, and volatile matter contains
Amount is more than 50wt%, and lime-ash (based on iron component) content is 39 ± 0.8wt%.With reference to Fig. 9, by iron content greasy filth and Iron Ore Powder,
Binding agent (bentonite) and coal dust supply into mixing arrangement well mixed, obtain mixed material, and wherein each component mass ratio is,
The addition of binding agent is the 3~12% of Iron Ore Powder, and the addition of iron content greasy filth is the 10~30% of Iron Ore Powder, the addition of coal dust
Amount is controlling C in compoundmol/OmolIt is 1.1~1.3, then mixed material is supplied and particle diameter is pressed into press ball device is
The elliposoidal mixing pelletizing of 25 ± 2mm；The mixing pelletizing for suppressing is entered by the dryer section that induction system delivers to pretreatment unit
Row dried process, mixing pelletizing is dried under 180 ± 10 degrees Celsius, and drying time is controlled in 20min；Will be dried mixed
Pelletizing feeding retort section is closed, gained volatile organic content, in destructive distillation is carried out under 350-500 degrees Celsius, is that oil gas is mixed by mixing pelletizing
Compound, then supplies into rotary hearth furnace pretreated mixing pelletizing, and stove is controlled by controlling the flow of each burner
The temperature of thorax, rotary hearth furnace entrance fire box temperature is controlled at 1000 degrees Celsius, and centre is often separated by a burner, and corresponding temperature increases
60 ± 20 degrees Celsius, and separate out five nearer burner temperatures of mouth reduces successively, is dropped successively per an adjacent burner temperature
Low 50 ± 30 degrees Celsius, there is reduction reaction in final pretreatment mixing pelletizing, obtain reducing solid at 1000~1100 degrees Celsius
Product and reduction flue gas, the reduction solid product heat that then will be obtained are sent in molten point of stove of combustion gas, under 1550 ± 15 degrees Celsius,
Iron is fused into molten iron, while molten point of flue gas and residue are obtained, molten point of stove of the reduction flue gas for then obtaining rotary hearth furnace and combustion gas
In molten point of flue gas obtaining and air supply into heat accumulating type air preheater and exchanged heat, air and cigarette after exchanging heat after exchange heat
Used as combustion-supporting gas in gas, and molten point of stove of burner and combustion gas that air after heat exchange is back in rotary hearth furnace；By in rotary hearth furnace
The reduction flue gas for obtaining and combustion gas are melted at least one of point flue gas that melts obtained in point stove and return to pretreatment unit as pre- place
Reason medium is used, and flue gas after heat exchange is supplied into smoke eliminator carries out purified treatment, to be purified flue gas, and
The gas mixture that will be obtained in pretreatment unit is supplied carries out separating treatment into oil gas purification separation device, obtains combustible gas
And oil water mixture, and combustible gas is back to the burner of rotary hearth furnace is used as fuel；Then by oil water mixture supply to
Separating treatment is carried out in oily-water seperating equipment, light oil, water and mink cell focus is obtained.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with
Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area
Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (5)
1. it is a kind of process iron content greasy filth system, it is characterised in that including：
Mixing arrangement, the mixing arrangement has iron content greasy filth entrance, coal powder entrance, Iron Ore Powder entrance, binding agent entrance and mixes
Close material outlet；
Press ball device, the press ball device has mixed material entrance and mixing pelletizing outlet, the mixed material entrance and institute
Mixed material outlet is stated to be connected；
Pretreatment unit, the pretreatment unit mixes ball after having mixing pelletizing entrance, gas mixture outlet and pretreatment
Group's outlet, the mixing pelletizing entrance is connected with the mixing pelletizing outlet；
Rotary hearth furnace, the rotary hearth furnace mixes pelletizing entrance, reduction exhanst gas outlet and reduction solid product outlet after having pretreatment,
And burner is disposed with the rotary hearth furnace, pelletizing entrance is mixed after the pretreatment and is exported with pelletizing is mixed after the pretreatment
It is connected；
Molten point of stove of combustion gas, the molten point stove of the combustion gas has reduction solid product entrance, molten point of exhanst gas outlet, molten iron outlet and residue
Outlet, the reduction solid product entrance is connected with the reduction solid product outlet.
2. system according to claim 1, it is characterised in that in the pretreatment unit along material movement direction successively
It is divided into dryer section and retort section, the mixing pelletizing entrance is arranged on the dryer section, pelletizing outlet is mixed after the pretreatment
The retort section is arranged on gas mixture outlet.
3. system according to claim 1 and 2, it is characterised in that further include：
Oil gas purification separation device, the oil gas purification separation device has gas mixture entrance, combustible gas outlet and profit
Mixture outlet, the gas mixture entrance is connected with gas mixture outlet, and the combustible gas is exported and described turn
Burner in the stove of bottom is connected；
Oily-water seperating equipment, the oily-water seperating equipment has oil water mixture entrance, lightweight oil export, water out and mink cell focus
Outlet, the oil water mixture entrance is connected with oil water mixture outlet.
4. system according to claim 3, it is characterised in that further include：
Heat accumulating type air preheater, the heat accumulating type air preheater has after air intake, high-temperature flue gas entry, heat exchange exhanst gas outlet and changes
Air outlet slit after heat, the high-temperature flue gas entry and at least one of the reduction exhanst gas outlet and the molten point of exhanst gas outlet
It is connected, at least one of molten point of stove of air outlet slit and the burner and the combustion gas is connected after the heat exchange；
Smoke eliminator, the smoke eliminator has smoke inlet and purifying smoke outlet, the smoke inlet and institute
Exhanst gas outlet is connected after stating heat exchange.
5. system according to claim 1, it is characterised in that in the reduction exhanst gas outlet and the molten point of exhanst gas outlet
At least one of be connected with the pretreatment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621298435.XU CN206279225U (en) | 2016-11-29 | 2016-11-29 | The system for processing iron content greasy filth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621298435.XU CN206279225U (en) | 2016-11-29 | 2016-11-29 | The system for processing iron content greasy filth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206279225U true CN206279225U (en) | 2017-06-27 |
Family
ID=59075821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621298435.XU Expired - Fee Related CN206279225U (en) | 2016-11-29 | 2016-11-29 | The system for processing iron content greasy filth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206279225U (en) |
-
2016
- 2016-11-29 CN CN201621298435.XU patent/CN206279225U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105441687B (en) | Dust of Iron And Steel Works recycles technique and system | |
| CN102634621A (en) | Device and method for treating refractory iron ore | |
| CN103614562A (en) | Process method for processing solid waste of steelworks by utilizing smelting furnace | |
| CN101724726B (en) | Method and device for ironmaking by smelting | |
| CN105567897A (en) | Iron making method and kiln | |
| CN110373546B (en) | Synergistic melting treatment method for iron-rich metallurgical dust and high-calcium waste incineration fly ash | |
| CN108796217B (en) | Device and method for recycling zinc-containing and iron-containing dust mud | |
| CN106086276A (en) | A kind of reclaim copper ashes waste heat and direct-reduction carries the system and method for ferrum | |
| CN108866341A (en) | A kind of chemical metallurgy solid waste resource recovery utilizes system and method | |
| CN101906540A (en) | Solder splash side blowing molten pool smelting furnace cold metal direct making fuming volatilization method | |
| CN206279231U (en) | The system for processing iron content greasy filth | |
| CN113736940B (en) | Method for treating copper slag by rotary hearth furnace | |
| CN206279226U (en) | The system for processing iron content greasy filth | |
| KR20060104255A (en) | Pig iron manufacture method of material and device that do waste tire to heat soure and contains ferrite oxide | |
| CN106244758A (en) | A kind of system and method efficiently utilizing body of heater fume afterheat to process iron-containing resource | |
| CN111250510B (en) | Flying ash melting treatment device and flying ash melting treatment method operating in sections | |
| CN106119530A (en) | Process the method and system of zinc kiln slag | |
| CN101321881B (en) | Method for processing lead-containing materials | |
| CN206279225U (en) | The system for processing iron content greasy filth | |
| CN102051426B (en) | Method and device for smelting iron by reduction | |
| CN206256139U (en) | The system for processing zinc leaching residue | |
| CN106435082A (en) | System and method for treating iron-containing oily sludge | |
| CN205907324U (en) | System for handle zinc leaching residue | |
| CN106435083A (en) | System and method for treating iron-containing oil sludge | |
| CN112831652A (en) | Carbon-free sintering system adopting high air temperature to provide heat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 102200 Beijing city Changping District Machi Town cow Road No. 18 Patentee after: Shenwu Technology Group Co.,Ltd. Address before: 102200 Beijing city Changping District Machi Town cow Road No. 18 Patentee before: BEIJING SHENWU ENVIRONMENT AND ENERGY TECHNOLOGY Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: System and method for treating iron-contained oil sludge Effective date of registration: 20180322 Granted publication date: 20170627 Pledgee: The Bank of Beijing Limited by Share Ltd. Anwar Road Branch Pledgor: Shenwu Technology Group Co.,Ltd. Registration number: 2018990000210 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190121 Granted publication date: 20170627 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220921 Granted publication date: 20170627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170627 |